An elongated area of relatively high atmospheric pressure extending from the center of a high-pressure region.

Noncollapsible suction hose attached to a pump and used to draft water from a source lower than the pump. Customary hose sizes in wildland fire engines are 2 and 2-1/2 inches in diameter (51 and 64 mm).

Heat transfer through a material from a region of higher temperature to a region of lower temperature.

Common type of fire hose nozzle permitting stream flow to be controlled by the firefighter at the nozzle rather than only at the source of supply.

The process that all incident personnel and equipment from associated organizations use to maintain information regarding the location and status of resources ordered for or assigned to an incident.

A legally enacted time during which burning activities are regulated by federal, state or local authority.

The alternative that achieves incident objectives, consistent with priority for firefighter and public safety, and is least expensive when considering expected costs for fire suppression and emergency stabilization and/or rehabilitation.

The protection of structures from the exterior, with no interior access or activity.

A unified area command is established when incidents under an area command are multijurisdictional.

A fire that consume surface fuels but not the overstory canopy.